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Finding the Fourth Proportional to 89,249, 123,169.38 and 49,505

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Solution

The fourth proportional to 89,249, 123,169.38 and 49,505 is: 68,320.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,249 : 123,169.38 = 49,505 : x
  2. Step 2: Convert to fraction form
    89,249/123,169.38 = 49,505/x
  3. Step 3: Cross multiply
    89,249x = 123,169.38 × 49,505
  4. Step 4: Simplify right side
    89,249x = 6,097,500,156.90
  5. Step 5: Solve for x
    x = 6,097,500,156.90/89,249
  6. Step 6: Final answer
    x = 68,320.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.